Waveshare 1.8inch colorful display module for micro:bit

Product Link

Waveshare 1.8inch colorful display module for micro:bit, 160x128OpenELAB

Introduction

This is a colorful display module designed for the BBC micro: bit, 1.8inch diagonal, 160 x 128 pixels, capable of displaying 65K colors.

Tired of the 5 x 5 LED matrix? Time to get a tiny monitor for your micro: bit, this one would be the ideal choice.

Feature

• micro:bit edge connector, directly pluggable

• Embedded driver ST7735S, supports 65K colors

• Onboard SRAM 23LC1024, used as display cache, no more out of memory

• SPI interface, takes up only a few IO pins

• Backlight adjustment via PWM

• Reserved solder pads for control interface, make it easy to connect with Arduino/Nucleo boards

• Comes with development resources (micro:bit graphical demo/user manual, etc.)

Specification

• Driver: ST7735S

• Resolution: 160 x 128

• Display color: RGB, 65K colors

• Operating voltage: 3.3V

• Dimension: 61mm x 51.5mm

Pinouts

Programming Guide

Micor:bit has variety of programming methods like mbed, micropython, typescript and other programming methods, as well as code online websites which are abundant.

The official recommendation are two programming methods: typescript and micropython. Typescript is the graphical programming language.

Note:For this LCD, we only provide demo code of typescript

Typescript

Typescript is a kind of graphical programming, its website is that: https://makecode.microbit.org/#

• Open a browser and input the next URL

• Create a new empty project

Click Project->New Project to create an empty project. Rename the project as LCD or any one you like to.

• Add Packeage

You can get the package of 1.8inch LCD for micro;bit from github. Click More..->Add Package, then copy the URL to the Edittext.

If you have the old Micro bit

https://github.com/waveshare/WSLCD1in8

If you have the Micro bit V2

https://github.com/waveshare/PXT-WSLCD1in8

Note: add a space follow the address

The Blocks

• Initiation

You need to initial LCD module first.

• Clear the screen

Clear the screen to white. Create an buffer on RAM with the resolution size 160*128 and initial it to white.

• Set the backlight

• Send display data

With this block, it will send one frame of buffer to the LCD and display. Note: it is always following drawing operation

• Draw point

Place the block before send display data. You can choose the position, color and size. For the screen, (1,1) is on top-left, and (160,128) is on bottom-right

There are tow way to set the color, the one is use the color block as above, another is to set the value (RGB565) by drag the slider.

• Draw line

You can choose the the line's position, color, size and its sytle

solid line:

dotted line: just need to change the Style

• Draw frame

Draw empty rectange:

Draw full rectange:

• Draw circle

Draw empty circle:

Draw full circle:

• Draw string

• Partial refresh

You can set display windows and refresh it on LCD instead of full refresh

Initialize LCD, set the backlight and then draw a rectangle from (30, 30) to (80, 80)

Then set the display windows block and set its position

Resources

Document

• Schematic

Programs

• Sample Program

Datasheet

• 23LC1024

• ST7735S

Software

• Zimo221.7z

• Image2Lcd.7z

• makecode website

• Image_Extraction

Certification information

• CE RoHS

FAQ